Heo Im is an oriental doctor, acknowledged as the best in acupuncture and moxibustion in Joseon. His success is blocked due to his low status.

A stranger arrives in a little village and soon after a mysterious sickness starts spreading. A policeman is drawn into the incident and is forced to solve the mystery in order to save his daughter.

Ren Xinzheng, a professor at the University of Traditional Chinese Medicine, is dedicated to spreading Chinese medicine. He resigned to set up a traditional Chinese medicine inheritance class, ...